I am also trying (without) any luck to identify how the fingerboard works-> I built MIDI controllers as a hobby. I received and eMail from Albert Glinsky and he identify Mr. Floyd Engels email address as Fengels07@aol.com. I try without luck to contact Mr. Engels. I will re-check with Mr Glinsky and let you know. Please keep us posted of anything you find.
Thanks for your reply, when I find Floyd´s address I certainly will share it with you. By the way I live in Sao Paulo, Brazil, I´m from NYC play violin for money (julliard school NYC grad) and before here lived a long time in Paris… so Espanhol is no problem for me..